Manner of lining vessels constructed oe sheet-iron



UNTTED sTaTnS PATENT critica.

JAMES KERR, WM. GRANT, AND JNO. POTTER, OF PITTSBURGH, PENNSYLVANIA.

MANNER OF LINING VESSELS CONSTRUCTED 0F SHEET-IRON.

Specification forming part of Letters Patent No. 2,612, dated May 7, 1842; Reissued October 14,

` i 1842, No. 47.

To all whom t may concern Be it known that we, JAMES KERK, WM. GRANT, and J oHN POTTER, ot Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented anew and Improved Mode of Constructing Tron Vessels, and that the following is a full, clear, and exact def scription thereof, reference being had to the accompanying drawings, making a part of this specification, in which- Figure l is an outside view; Fig. 2, an inside view; Fig. 3, parts detached.

The letters of reference on the differentparts are the saine in all the figures.

In constructing any kind of iron vessel, used in navigation, we form the keel (a) in the usual way, and cover the ribs (b), which are formed of angle iron, with sheets or plates of iron (a), as is now generally done in similar structures; but in order to protect the vessel more effectually from leaking by the springing of the rivets, from ice, shot, &c., we line the inside otl the vessel throughout with sheet metal (CZ) between the ribs, the edges being turned out at right angles to form lanches, which are rmly riveted to the ribs, and the joints calked water tight, thus forming chambers between the ribs, and

rendering the vessel more buoyant should she spring a leak, as each chamber is entirely insulated from the others and constitutes a separmate buoy. It will thus be evidentthat should the outer sheathing ot the vessel be injured between any two or more of the ribs that chamber only will till with water, the rest of the Vessel continuing to retain its buoyancy. It is also more Stiff, and the necessity for bulkheads is entirely Superceded.

What we claim as our invention, and desire to secure by Letters Patent is- Th'e lining iron vessels, used in navigation, between the ribs with metal, so as to form water tight chambers all around the sides, in the manner and for the purpose above described.

J AMES KERR. lVM. GRANT. JOHN POTTER. Vitnesses of the signature yof James Kerr:

J. J. GREENOUGH, J. H. GODDARD. VitnesseS to the signatures of lVin, Grant and John Potter:

VM. J. MILLER, MICHL.` TRACY.

[FIRST PRINTED 1913.] 

